Safety valve airtightness detection device

Abstract

The invention discloses a safety valve airtightness detection device, and relates to the technical field of safety valve airtightness detection. Comprising a workbench, a driving box and two limiting bases, a detection device is fixedly arranged on the outer wall of the top of the workbench, and the detection device comprises a bottom plate and a mounting base. A first control block is rotated to drive an adjusting screw rod to rotate in a limiting hole, so that a clamping block slides in a sliding groove, a safety valve is clamped, an inflator arranged on the outer wall of a limiting base is started to inflate the interior of an air bag, the inflator starts to work, external air is inflated into the air bag through an inflation pipe and an inflation connector, and the air continuously enters the air bag, so that the safety valve is closed. The air bag expands gradually and is tightly attached to the periphery of the part, needing to be detected, of the safety valve in the expansion process, the detection area of the safety valve can be effectively sealed, good conditions are created for follow-up precise air tightness detection, detection gas leakage is prevented, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection of safety valves, and in particular to an air tightness detection device for safety valves. Background Art

[0002] In the modern industrial system, safety valves are key components to ensure the safe operation of various pressure-bearing equipment and are widely used in many fields such as petrochemicals, electricity, metallurgy, and pharmaceuticals. Taking the petrochemical industry as an example, under the high-temperature and high-pressure production environment, the pressure in various reaction vessels and pipelines is constantly changing. Once the pressure exceeds the equipment's tolerance limit, the safety valve must be opened quickly to release the pressure to prevent serious accidents such as explosions and leaks, thereby protecting personnel lives, avoiding environmental pollution, and reducing the company's economic losses. In thermal power plants, steam boilers and other equipment also rely on safety valves to maintain stable operating pressure to ensure the normal operation of the power generation system.

[0003] The existing detection device has defects in the design of the sealing structure, and it is difficult to adapt to the interfaces of safety valves of different specifications and shapes. Common sealing methods, such as simple rubber pad sealing, cannot form a good sealing effect for some safety valve interfaces with uneven surfaces or special structures, resulting in gas leakage during the detection process, affecting the accuracy of the test results. In addition, traditional safety valve air tightness detection devices usually require professional technicians to perform complex debugging and calibration during the installation and detection process, have high requirements on the installation environment, consume a lot of time and manpower costs, and when detecting safety valves of different models, it is often necessary to frequently replace various adapter components, the operation process is cumbersome, and the detection efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to provide a safety valve air tightness detection device, which solves the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safety valve air tightness detection device, comprising a workbench, a drive box and two groups of limit bases, the top outer wall of the workbench is fixedly provided with a detection device, the detection device comprises a bottom plate and a mounting base, one group of the limit bases is evenly distributed on the top of the mounting base, the outer wall of each of the limit bases is provided with a plurality of sliding grooves, the inner wall of each of the sliding grooves is slidably provided with a clamping block, the inner wall of each of the sliding grooves is provided with a limit hole, the inner wall of each of the limit holes is rotatably provided with a limit ring, the outer wall of each of the limit rings is fixedly provided with an adjusting screw, the outer wall of each of the adjusting screws away from the limit ring is fixedly provided with a first control block, the outer wall of each of the clamping blocks is penetrated with a bolt hole, each of the clamping blocks is threadedly connected with the corresponding adjusting screw through the provided bolt hole, the outer wall of each of the limit bases is fixedly provided with an inflator, the outer wall of each of the inflators is fixedly provided with an inflation tube, and the outer wall of each of the limit bases is fixedly provided with an airbag.

[0006] Preferably, the top outer wall of the bottom plate is provided with a plurality of adjusting grooves, and the bottom outer wall of the mounting base is fixedly provided with a plurality of sliding blocks, the adjusting grooves correspond to the sliding blocks one by one, and the sliding blocks slide inside the adjusting grooves, and the mounting base and the bottom plate are slidably connected through the arranged adjusting grooves and the sliding blocks, and the outer walls on both sides of the mounting base are provided with through holes, and a movable rod is slidably inserted into the inner wall of each of the through holes, and a limiting plate is fixedly provided at one end of each of the movable rods, and a second control block is fixedly provided at the other end of each of the movable rods, and an elastic spring is fixedly provided between each of the second control blocks and the mounting base, and each of the elastic springs is respectively located outside the corresponding through hole, and each of the elastic springs is respectively located outside the corresponding movable rod, the second control block is located above the mounting base, and the limiting plate is located below the mounting base.

[0007] Preferably, the drive box includes a first drive motor and a mounting plate, a support plate is fixedly provided on the inner wall of the drive box, two groups of fixed bearings are fixedly provided on the bottom outer wall of the support plate, a reciprocating screw is rotatably provided between each group of the fixed bearings, one end outer wall of one group of the reciprocating screws is fixedly connected to the output end of the first drive motor, a sliding block is slidably provided on the outer wall of each group of the reciprocating screws, the bottom outer wall of each group of the sliding blocks is fixed with the same connecting plate, a cylinder is fixedly provided on the top outer wall of the connecting plate, the output end of the cylinder passes through the inner wall of the connecting plate and is fixedly connected to the top of the mounting plate, and a plurality of air pumps are fixedly provided on the bottom outer wall of the mounting plate.

[0008] Preferably, a fixing plate is fixedly provided on the bottom outer wall of each of the air pumps, a plate groove is penetrated through the outer wall of each of the fixing plates, a second drive motor is fixedly provided on one side outer wall of each of the fixing plates, a bidirectional screw is fixedly provided on the output end of each of the second drive motors, each of the bidirectional screws is respectively located inside the corresponding plate groove, the other end of each bidirectional screw is rotatably connected to the inner wall of the corresponding plate groove, a group of movable blocks are threadedly provided on the outer wall of each of the bidirectional screws, and a fixed splint is fixedly provided on the bottom outer wall of each of the movable blocks.

[0009] Preferably, another group of limiting bases are respectively arranged between each group of fixed clamping plates, and the inner walls of the other group of limiting bases are respectively connected to the output ends of the corresponding air pumps.

[0010] Preferably, a data display is provided on the outer wall of the drive box.

[0011] Preferably, a plurality of first sleeves are fixedly provided on the top outer wall of the connecting plate, a plurality of second sleeves are slidably inserted into the inner walls of the first sleeves, and the output ends of the second sleeves pass through the inner wall of the connecting plate and are fixedly connected to the top outer wall of the mounting plate.

[0012] Preferably, a fixing bracket is fixedly arranged between the driving box and the workbench, and the driving box is fixedly mounted above the workbench through the fixing bracket.

[0013] Preferably, the outer wall of each of the airbags is provided with an inflation interface, each of the inflators is connected to the corresponding airbag via the inflation interface and the inflation tube, and a detection hole is opened in the middle of each of the limit bases.

[0014] Preferably, each of the air pump output ends is located in the middle of the inner wall of the corresponding plate groove, and each of the air pump output ends is located in the middle of a corresponding group of movable blocks.

[0015] Compared with the related art, the safety valve air tightness detection device provided by the present invention has the following beneficial effects: 1. The present invention provides a safety valve air tightness detection device, which drives the adjusting screw to rotate in the limit hole by rotating the first control block, and makes the clamping block slide in the sliding groove, thereby clamping the safety valve, and starting the inflator arranged on the outer wall of the limit base to inflate the inside of the airbag. The inflator starts to work, and the external air is filled into the airbag through the inflation pipe and the inflation interface. As the gas continues to enter, the airbag gradually expands, and during the expansion process, it will fit tightly around the part of the safety valve that needs to be detected, which can effectively seal the detection area of ​​the safety valve, create good conditions for subsequent accurate air tightness detection, prevent the leakage of the detection gas, and ensure the accuracy of the detection result.

[0016] 2. The present invention provides a safety valve air tightness detection device, which pulls the second control block upwards to separate the limit plate from the upper surface of the base plate, moves one side of the installation base workbench, and releases the second control block after moving to the edge. The limit plate is reset and fits tightly with the base plate under the elastic action of the elastic spring, thereby ensuring the stability of the installation base, making it convenient for the staff to install the safety valve to be tested on the limit base, and improving the efficiency of the preparation work before the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the workbench of the present invention; Figure 3 It is an exploded view of a part of the structure of the detection device of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at center; Figure 5 It is a structural schematic diagram of the drive box of the present invention; Figure 6 This is a schematic structural diagram of the drive box of the present invention from another angle; Figure 7 This is a schematic diagram of the structure of the limiting base of the present invention; Figure 8 It is an exploded view of part of the structure of the limiting base of the present invention; Fig. 9 For the present invention Figure 8 A magnified view of the structure at B in the middle; Fig.10 This is a schematic diagram of the structure of the mounting plate of the present invention; Fig.11 For the present invention Fig.10 Enlarged view of the structure at point C in the middle.

[0018] In the figure: 1. workbench; 2. detection device; 201. bottom plate; 202. adjustment slot; 203. mounting base; 204. limit base; 205. sliding slot; 206. limit hole; 207. limit ring; 208. adjustment screw; 209. first control block; 210. clamping block; 211. bolt hole; 212. detection hole; 213. inflator; 214. inflating tube; 215. inflating interface; 216. airbag; 217. through hole; 218. slider; 3. movable rod; 4. Limit plate; 5. Elastic spring; 6. Second control block; 7. Drive box; 8. Support plate; 9. Fixed bearing; 10. First drive motor; 11. Reciprocating screw; 12. Sliding block; 13. Connecting plate; 14. Cylinder; 15. First sleeve; 16. Second sleeve; 17. Mounting plate; 18. Air pump; 19. Fixed plate; 20. Plate slot; 21. Second drive motor; 22. Bidirectional screw; 23. Movable block; 24. Fixed splint; 25. Data display; 26. Fixed bracket. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: See also Figure 1-Figure 11The present invention provides a technical solution: a safety valve air tightness detection device, comprising a workbench 1, a drive box 7 and two groups of limit bases 204, a detection device 2 is fixedly arranged on the top outer wall of the workbench 1, the detection device 2 comprises a bottom plate 201 and a mounting base 203, wherein one group of limit bases 204 is evenly distributed on the top of the mounting base 203, and the outer wall of each limit base 204 is provided with a plurality of sliding grooves 205, and the inner wall of each sliding groove 205 is slidably provided with a clamping block 210, and each The inner wall of each sliding groove 205 is provided with a limit hole 206, and the inner wall of each limit hole 206 is rotatably provided with a limit ring 207, and the outer wall of each limit ring 207 is fixedly provided with an adjusting screw 208, and the outer wall of each adjusting screw 208 away from the limit ring 207 is fixedly provided with a first control block 209, and the outer wall of each clamping block 210 is penetrated with a bolt hole 211, and each clamping block 210 is threadedly connected with the corresponding adjusting screw 208 through the provided bolt hole 211. The outer wall of each limiting base 204 is fixedly provided with an inflator 213, the outer wall of each inflator 213 is fixedly provided with an inflating tube 214, the outer wall of each limiting base 204 is fixedly provided with an air bag 216, another group of limiting bases 204 are respectively arranged between each group of fixed splints 24, and the inner walls of another group of limiting bases 204 are respectively connected to the output ends of the corresponding air pumps 18, the outer wall of the drive box 7 is provided with a data display 25, and a fixed device is fixedly provided between the drive box 7 and the workbench 1 The bracket 26, the drive box 7 is fixedly installed above the workbench 1 through the fixed bracket 26, the outer wall of each airbag 216 is provided with an inflation interface 215, each inflator 213 is connected to the corresponding airbag 216 through the inflation interface 215 and the inflation tube 214, and the middle of each limit base 204 is provided with a detection hole 212, and each air pump 18 output end is respectively located in the middle of the inner wall of the corresponding plate slot 20, and each air pump 18 output end is respectively located in the middle of a corresponding group of movable blocks 23; The drive box 7 includes a first drive motor 10 and a mounting plate 17. A support plate 8 is fixedly arranged on the inner wall of the drive box 7. Two groups of fixed bearings 9 are fixedly arranged on the bottom outer wall of the support plate 8. A reciprocating screw 11 is rotatably arranged between each group of fixed bearings 9. One end outer wall of one group of reciprocating screws 11 is fixedly connected to the output end of the first drive motor 10. A sliding block 12 is slidably arranged on the outer wall of each group of reciprocating screws 11. The bottom outer wall of each group of sliding blocks 12 is fixed with the same connecting plate 13. A cylinder 14 is fixedly arranged on the top outer wall of the connecting plate 13, and the output end of the cylinder 14 penetrates the inner wall of the connecting plate 13 and is fixedly connected to the top of the mounting plate 17. A plurality of air pumps 18 are fixedly arranged on the bottom outer wall of the mounting plate 17. A plurality of first sleeves 15 are fixedly arranged on the top outer wall of the connecting plate 13, and a plurality of second sleeves 16 are slidably inserted into the inner walls of the plurality of first sleeves 15. The output ends of the plurality of second sleeves 16 penetrate the inner wall of the connecting plate 13 and are fixedly connected to the top outer wall of the mounting plate 17. A fixing plate 19 is fixedly provided on the bottom outer wall of each air pump 18, a plate slot 20 is penetrated through the outer wall of each fixing plate 19, a second drive motor 21 is fixedly provided on one side outer wall of each fixing plate 19, a bidirectional screw 22 is fixedly provided on the output end of each second drive motor 21, each bidirectional screw 22 is respectively located inside the corresponding plate slot 20, the other end of each bidirectional screw 22 is rotatably connected to the inner wall of the corresponding plate slot 20, a group of movable blocks 23 are threadedly provided on the outer wall of each bidirectional screw 22, and a fixed clamping plate 24 is fixedly provided on the bottom outer wall of each movable block 23; In this embodiment, the safety valve to be tested is placed inside the limiting base 204 located on the top of the mounting base 203, and the first control block 209 is rotated to drive the adjusting screw 208 to rotate in the limiting hole 206, so that the clamping block 210 slides in the sliding groove 205, thereby clamping the safety valve, and starting the inflator 213 arranged on the outer wall of the limiting base 204 to inflate the inside of the airbag 216. The inflator 213 starts to work and fills the outside air into the airbag 216 through the inflation pipe 214 and the inflation interface 215. As the gas continues to enter, the airbag 216 gradually expands. During the expansion process, it will fit tightly around the part of the safety valve that needs to be tested, and can effectively seal the detection area of ​​the safety valve. This creates favorable conditions for subsequent accurate air tightness testing, prevents leakage of test gas, and ensures the accuracy of test results. At the same time, the airbag 216 is provided in conjunction with the clamping block 210. The airbag 216 has good flexibility and elasticity. After being inflated, it can adaptively deform according to the surface contour of the safety valve, tightly wrap the test part of the safety valve, fill possible gaps, and effectively prevent leakage of test gas, greatly improving the accuracy and reliability of air tightness testing. It can also adapt to the clamping and fixing of safety valves of different models, and can also reduce the shaking of the safety valve during the testing process, ensuring the stability of the testing process and avoiding the occurrence of situations in which the test results are affected by the displacement of the safety valve. The second airbag 18 at the bottom of the air pump 18 is started. The output end of the driving motor 21 drives the bidirectional screw 22 to rotate. Two movable blocks 23 are arranged outside the bidirectional screw 22. The two movable blocks 23 move in opposite directions. A fixed splint 24 is fixedly arranged on the bottom outer wall of each movable block 23. The movement of the movable block 23 naturally drives the synchronous movement of the fixed splint 24. The two fixed splints 24 realize the opening and closing action with the opposite movement of the movable block 23. The first driving motor 10 in the driving box 7 is turned on, which can be used to adjust the position of the upper limit base 204 so that the upper limit base 204 corresponds to the lower limit base 204. After starting the cylinder 14, the piston rod of the cylinder 14 performs telescopic movement, and its output end passes through the connecting plate 13 and is connected with the mounting plate 17. The top is fixedly connected, thereby driving the mounting plate 17 to move up and down. A number of air pumps 18 are fixedly arranged on the outer wall at the bottom of the mounting plate 17. The movement of the mounting plate 17 causes the air pump 18 to move up and down synchronously. When the air pump 18 is close to the lower limit base 204, the detection gas can be more accurately delivered to the lower limit base 204, ensuring the stability and efficiency of the gas delivery process, and avoiding poor gas delivery due to excessive distance or position deviation; at the same time, when it is necessary to test safety valves of different height specifications, the up and down movement of the air pump 18 can flexibly adjust the relative height with the safety valve, ensuring that the output end of the air pump 18 and the safety valve interface can be tightly connected, providing a strong guarantee for subsequent accurate air tightness testing; Start the air pump 18, and the air pump 18 inflates the safety valve. The gas enters the safety valve through the detection hole 212 of the limit base 204. If the safety valve has an airtightness problem, the gas will leak. The leaked gas will cause the pressure of the airbag 216 to change. The sensor transmits the pressure change data to the data display 25. The operator can judge whether the airtightness of the safety valve is qualified based on the data displayed on the data display 25. If the pressure is stable and meets the standard, the airtightness of the safety valve is good. If the pressure drops abnormally, it means that the safety valve is leaking and the airtightness is unqualified.

[0021] Embodiment 2: See also Figure 1-Figure 4 As shown, on the basis of the first embodiment, the present invention provides a technical solution: a plurality of adjustment grooves 202 are provided on the top outer wall of the bottom plate 201, a plurality of sliders 218 are fixedly provided on the bottom outer wall of the mounting base 203, the adjustment grooves 202 correspond to the sliders 218 one by one, the sliders 218 slide inside the adjustment grooves 202, the mounting base 203 and the bottom plate 201 are slidably connected through the arranged adjustment grooves 202 and the sliders 218, through holes 217 are provided on the outer walls on both sides of the mounting base 203, and a movable rod 3 is slidably inserted into the inner wall of each through hole 217, a limiting plate 4 is fixedly provided at one end of each movable rod 3, a second control block 6 is fixedly provided at the other end of each movable rod 3, an elastic spring 5 is fixedly provided between each second control block 6 and the mounting base 203, each elastic spring 5 is respectively located outside the corresponding through hole 217, each elastic spring 5 is respectively located outside the corresponding movable rod 3, the second control block 6 is located above the mounting base 203, and the limiting plate 4 is located below the mounting base 203.

[0022] In this embodiment, when the device is used, the staff first pulls the second control block 6 upward to separate the limit plate 4 from the upper surface of the bottom plate 201, moves one side of the mounting base 203 workbench 1, and releases the second control block 6 after moving to the edge. The limit plate 4 is reset and fits tightly with the bottom plate 201 under the elastic action of the elastic spring 5, ensuring the stability of the mounting base 203, making it convenient for the staff to install the safety valve to be tested on the limit base 204, thereby improving the efficiency of the pre-test preparation work.

[0023] Working principle: When the device is used, the staff first pulls the second control block 6 upwards to make the limit plate 4 separate from the upper surface of the bottom plate 201, moves one side of the mounting base 203 workbench 1, and releases the second control block 6 after moving to the edge. The limit plate 4 is reset under the elastic action of the elastic spring 5 and fits tightly with the bottom plate 201, ensuring the stability of the mounting base 203, making it convenient for the staff to install the safety valve to be tested on the limit base 204, thereby improving the efficiency of the pre-test preparation work. The safety valve to be tested is placed inside the limit base 204 located on the top of the mounting base 203, and the first control block 209 is rotated to drive the adjusting screw 208 to rotate in the limit hole 206, so that the clamping block 210 slides in the sliding groove 205, thereby clamping the safety valve, and starting the inflator 213 arranged on the outer wall of the limit base 204 to inflate the inside of the airbag 216. The inflator 213 starts to work and the external air is passed through the inflation pipe 2 14. The airbag 216 is filled into the interior through the inflation interface 215. As the gas continues to enter, the airbag 216 gradually expands. During the expansion process, it will fit tightly around the part of the safety valve that needs to be tested, which can effectively seal the detection area of ​​the safety valve, creating good conditions for subsequent accurate air tightness testing, preventing the leakage of the detection gas, and ensuring the accuracy of the test results. At the same time, the airbag 216 is arranged to cooperate with the clamping block 210. The airbag 216 has good flexibility and elasticity. After inflation, it can adaptively deform according to the surface contour of the safety valve, tightly wrap the detection part of the safety valve, fill possible gaps, and effectively prevent the leakage of the detection gas, greatly improving the accuracy and reliability of the air tightness test. It can also adapt to the clamping and fixing of safety valves of different models, and can also reduce the shaking of the safety valve during the detection process, ensuring the stability of the detection process, and avoiding the occurrence of the situation where the displacement of the safety valve affects the detection result; Start the second drive motor 21 at the bottom of the air pump 18, and its output end drives the bidirectional screw 22 to rotate. Two movable blocks 23 are arranged outside the bidirectional screw 22, and the two movable blocks 23 move in opposite directions. A fixed splint 24 is fixedly arranged on the bottom outer wall of each movable block 23. The movement of the movable block 23 naturally drives the synchronous movement of the fixed splint 24. The two fixed splints 24 realize the opening and closing action with the opposite movement of the movable block 23. Turn on the first drive motor 10 in the drive box 7, which can be used to adjust the position of the upper limit base 204 so that the upper limit base 204 corresponds to the lower limit base 204. After starting the cylinder 14, the piston rod of the cylinder 14 performs telescopic movement, and its output end passes through the connecting plate 13 and is connected to the connecting plate 13. The top of the mounting plate 17 is fixedly connected, thereby driving the mounting plate 17 to move up and down. A number of air pumps 18 are fixedly arranged on the outer wall at the bottom of the mounting plate 17. The movement of the mounting plate 17 causes the air pump 18 to move up and down synchronously. When the air pump 18 is close to the lower limit base 204, the detection gas can be more accurately delivered to the lower limit base 204, ensuring the stability and efficiency of the gas delivery process, and avoiding poor gas delivery due to excessive distance or position deviation; at the same time, when it is necessary to test safety valves of different height specifications, the up and down movement of the air pump 18 can flexibly adjust the relative height with the safety valve, ensuring that the output end of the air pump 18 and the safety valve interface can be tightly connected, providing a strong guarantee for subsequent accurate air tightness testing; Start the air pump 18, and the air pump 18 inflates the safety valve. The gas enters the safety valve through the detection hole 212 of the limit base 204. If the safety valve has an airtightness problem, the gas will leak. The leaked gas will cause the pressure of the airbag 216 to change. The sensor transmits the pressure change data to the data display 25. The operator can judge whether the airtightness of the safety valve is qualified based on the data displayed on the data display 25. If the pressure is stable and meets the standard, the airtightness of the safety valve is good. If the pressure drops abnormally, it means that the safety valve is leaking and the airtightness is unqualified.

Claims

1. A safety valve air tightness detection device, comprising a workbench (1), a drive box (7) and two sets of limit bases (204), characterized in that: A detection device (2) is fixedly arranged on the top outer wall of the workbench (1), and the detection device (2) comprises a bottom plate (201) and a mounting base (203), wherein a group of the limit bases (204) are evenly distributed on the top of the mounting base (203), and each of the limit bases (204) has a plurality of sliding grooves (205) on its outer wall, and each of the sliding grooves (205) has a clamping block (210) slidably arranged on its inner wall, and each of the sliding grooves (205) has a limit hole (206) on its inner wall, and each of the limit holes (206) has a limit ring (207) rotatably arranged on its inner wall, and each of the limit rings (207) has a limit ring (207) on its outer wall. An adjusting screw (208) is fixedly arranged, and a first control block (209) is fixedly arranged on the outer wall of one end of each adjusting screw (208) away from the limiting ring (207). A bolt hole (211) is penetrated through the outer wall of each clamping block (210). Each clamping block (210) is threadedly connected to the corresponding adjusting screw (208) through the provided bolt hole (211). An inflator (213) is fixedly arranged on the outer wall of each limiting base (204), and an inflation tube (214) is fixedly arranged on the outer wall of each inflator (213). An air bag (216) is fixedly arranged on the outer wall of each limiting base (204).

2. A safety valve air tightness detection device according to claim 1, characterized in that: The top outer wall of the bottom plate (201) is provided with a plurality of adjustment grooves (202); the bottom outer wall of the mounting base (203) is fixedly provided with a plurality of sliders (218); the adjustment grooves (202) correspond to the sliders (218) one by one; the sliders (218) slide inside the adjustment grooves (202); the mounting base (203) and the bottom plate (201) are slidably connected via the adjustment grooves (202) and the sliders (218); the outer walls on both sides of the mounting base (203) are provided with through holes (217); the inner wall of each through hole (217) is slidably plugged with a movable A rod (3), a limiting plate (4) is fixedly provided at one end of each movable rod (3), a second control block (6) is fixedly provided at the other end of each movable rod (3), an elastic spring (5) is fixedly provided between each second control block (6) and the mounting base (203), each elastic spring (5) is respectively located outside a corresponding through hole (217), each elastic spring (5) is respectively located outside a corresponding movable rod (3), the second control block (6) is located above the mounting base (203), and the limiting plate (4) is located below the mounting base (203).

3. The air tightness detection device for a safety valve according to claim 1, characterized in that: The drive box (7) comprises a first drive motor (10) and a mounting plate (17). A support plate (8) is fixedly arranged on the inner wall of the drive box (7). Two groups of fixed bearings (9) are fixedly arranged on the bottom outer wall of the support plate (8). A reciprocating screw (11) is rotatably arranged between each group of the fixed bearings (9). One end outer wall of one group of the reciprocating screws (11) is fixedly connected to the output end of the first drive motor (10). A sliding block (12) is slidably arranged on the outer wall of each group of the reciprocating screws (11). The bottom outer wall of each group of the sliding blocks (12) is fixed with the same connecting plate (13). A cylinder (14) is fixedly arranged on the top outer wall of the connecting plate (13). The output end of the cylinder (14) passes through the inner wall of the connecting plate (13) and is fixedly connected to the top of the mounting plate (17). A plurality of air pumps (18) are fixedly arranged on the bottom outer wall of the mounting plate (17).

4. A safety valve air tightness detection device according to claim 3, characterized in that: A fixing plate (19) is fixedly provided on the bottom outer wall of each of the air pumps (18), a plate groove (20) is penetrated through the outer wall of each of the fixing plates (19), a second drive motor (21) is fixedly provided on one side outer wall of each of the fixing plates (19), a bidirectional screw (22) is fixedly provided on the output end of each of the second drive motors (21), each of the bidirectional screws (22) is respectively located inside the corresponding plate groove (20), the other end of each of the bidirectional screws (22) is rotatably connected to the inner wall of the corresponding plate groove (20), a group of movable blocks (23) are threadedly provided on the outer wall of each of the bidirectional screws (22), and a fixing clamp (24) is fixedly provided on the bottom outer wall of each of the movable blocks (23).

5. The air tightness detection device for a safety valve according to claim 1, characterized in that: Another set of limiting bases (204) is respectively arranged between each set of fixed clamping plates (24), and the inner walls of the other set of limiting bases (204) are respectively connected to the output ends of the corresponding air pumps (18).

6. A safety valve air tightness detection device according to claim 1, characterized in that: A data display (25) is provided on the outer wall of the drive box (7).

7. A safety valve air tightness detection device according to claim 3, characterized in that: A plurality of first sleeves (15) are fixedly arranged on the top outer wall of the connecting plate (13), a second sleeve (16) is slidably inserted into the inner walls of the plurality of first sleeves (15), and the output ends of the plurality of second sleeves (16) penetrate the inner wall of the connecting plate (13) and are fixedly connected to the top outer wall of the mounting plate (17).

8. The air tightness detection device for a safety valve according to claim 5, characterized in that: A fixed bracket (26) is fixedly arranged between the drive box (7) and the workbench (1), and the drive box (7) is fixedly mounted above the workbench (1) via the fixed bracket (26).

9. The air tightness detection device for a safety valve according to claim 1, characterized in that: The outer wall of each airbag (216) is provided with an inflation interface (215), each inflator (213) is connected to the corresponding airbag (216) via the inflation interface (215) and the inflation tube (214), and a detection hole (212) is provided in the middle of each limit base (204).

10. The air tightness detection device for a safety valve according to claim 1, characterized in that: The output end of each of the air pumps (18) is located in the middle of the inner wall of the corresponding plate slot (20), and the output end of each of the air pumps (18) is located in the middle of a corresponding group of movable blocks (23).

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